diff --git a/src/incidencedatetime.cpp b/src/incidencedatetime.cpp
--- a/src/incidencedatetime.cpp
+++ b/src/incidencedatetime.cpp
@@ -678,6 +678,8 @@
             &IncidenceDateTime::checkDirtyStatus);
     connect(mUi->mStartTimeEdit, &KTimeComboBox::timeChanged, this,
             &IncidenceDateTime::updateStartTime);
+    connect(mUi->mStartTimeEdit, &KTimeComboBox::timeEdited, this,
+            &IncidenceDateTime::checkDirtyStatus);
     connect(mUi->mTimeZoneComboStart,
             static_cast<void (IncidenceEditorNG::KTimeZoneComboBox::*)(int)>(&IncidenceEditorNG::
                                                                              KTimeZoneComboBox::
@@ -691,6 +693,8 @@
             &IncidenceDateTime::checkDirtyStatus);
     connect(mUi->mEndTimeEdit, &KTimeComboBox::timeChanged, this,
             &IncidenceDateTime::checkDirtyStatus);
+    connect(mUi->mEndTimeEdit, &KTimeComboBox::timeEdited, this,
+            &IncidenceDateTime::checkDirtyStatus);
     connect(mUi->mEndDateEdit, &KDateComboBox::dateChanged, this,
             &IncidenceDateTime::endDateChanged);
     connect(mUi->mEndTimeEdit, &KTimeComboBox::timeChanged, this,